The Pew Global Attitudes Project is a series of worldwide public-opinion surveys and reports. It is globally respected for its accuracy and reliability. It just released a new finding where it undertook to know the percentage of people that thinks that China has surpassed or will surpass U.S. as the leading superpower.
This is how the survey, percentage who believe China will become the superpower or has already, came back:
No African nation was included in this report – perhaps our opinions do not count!